/Engine/Plugins/Runtime/GeometryProcessing/Source/DynamicMesh/Public/Operations/PolyModeling/PolyModelingMaterialUtil.h
Compute inclusive range [0...N] of MaterialID values currently in use on Mesh (ie range always includes 0)
true if MaterialIDs attribute exists (if false, Range is returned as [0,0])
namespace UE { namespace Geometry { bool UE::Geometry::ComputeMaterialIDRange ( const [FDynamicMesh3](API\Runtime\GeometryCore\DynamicMesh\FDynamicMesh3) & Mesh, [FInterval1i](API\Runtime\GeometryCore\FInterval1i) & MaterialIDRange ) } }